Magnitude effects for experienced rewards at short delays in the escalating interest task

A first-person shooter video game was adapted for the study of choice between smaller sooner and larger later rewards. Participants chose when to fire a weapon that increased in damage potential over a short interval. When the delay to maximum damage was shorter (5–8 s), people showed greater sensitivity to the consequences of their choices than when the delay was longer (17–20 s). Participants also evidenced a magnitude effect by waiting proportionally longer when the damage magnitudes were doubled for all rewards. The experiment replicated the standard magnitude effect with this new video game preparation over time scales similar to those typically used in nonhuman animal studies and without complications due to satiation or cost.     

IV. Does a generalized Heisenberg principle operate in the social sciences?

It is argued that a generalization of Heisenberg's principle of indeterminacy is possible in the social sciences. The empirical grounds for this contention lie with interference phenomena induced by transference distortions that may occur when human beings investigate the behaviour of one another.     

Camouflage-Collar Crime: An Examination of Wildlife Crime and Characteristics of Offenders in Florida

Fish and wildlife crime is an understudied area of criminology and criminal justice and when it is the focus of research, studies tend to be characterized by small samples and a lack of multivariate analyses. This study examines the nature and extent of cited fish and wildlife offenses and characteristics of offenders through quantitative analysis of 15,657 incidents of cited fish and wildlife offenses in Florida. The results indicate that a viable typology of wildlife crime is emergent and that there are important racial and ethnic differences across types of wildlife offenses.     

The effects of curvature on haptic judgments of extent in sighted and blind people

A series of experiments was carried out to examine the effect of curvature on haptic judgments of extent in sighted and blind individuals. Experiment 1 showed that diameters connecting the endpoints of semicircular lines were underestimated with respect to straight lines, but failed to show an effect of visual experience on length judgments. In experiment 2 we tested are lengths. The effects of curvature on perceived path length were weaker, but were still present in this experiment. Visual experience had no effect on path length judgments. Another experiment was performed to examine the effect of repeated tracing (1, 5, 9, or unlimited number of traces) on judgments of the lengths of straight lines and diameters of semicircles. Judgments of extent were more accurate when subjects engaged in larger numbers of traces. There was no effect of number of traces on curve-height judgments, suggesting that subjects were not using height estimates to judge diameters of semicircles. In a further experiment we tested the effect of number of traces on curves that varied in height. Restricting subjects to a single trace magnified the effect of path length on judgments of the distance between the endpoints of curves. Additional experiments showed that curvature effects on diameter judgments were not eliminated when stimuli were in the frontal plane or when the curves were explored with the use of two hands. Arm support had no effect on judged length in experiment 7. A final experiment showed a robust horizontal vertical illusion in haptic perception of convex curves, with overestimation of the heights of the curves compared with their widths. The practical and theoretical implications of the results are discussed.     

“I've Got Some Bad News…”:Veterinarians' Recollections of Communicating Bad News to Clients1

The purpose of this investigation was to gain a better understanding of the transactional processes associated with communicating bad news. The authors asked 62 veterinarians to recall a time when they gave bad news and to respond to a series of statements designed to assess what they did in the transaction and how the transaction impacted the receiver of the news, as well as themselves. The majority of participants followed recommendations published in the medical and veterinary literatures, but rated some of these recommended strategies as making the news harder to give. Although these transactions were not rated as being overly stressful, for some veterinarians stress transcended the bounds of the interaction. Consistent with a transactional stress and coping perspective, preparation efforts were correlated with delivery efforts. However, preparation stress was unrelated to preparation or delivery efforts, and neither preparation efforts nor delivery efforts related to effectiveness appraisals or perceptions of client satisfaction.